//
//  ScheduleDetailVC.swift
//  QuickLocation
//
//  Created by 八条 on 2026/6/25.
//

import UIKit
import RxSwift
import RxCocoa
import RxDataSources
import ObjectMapper

class ScheduleDetailVC: BaseViewController {

    fileprivate var rootView: ScheduleDetailView!

    override func loadView() {
        rootView = ScheduleDetailView(frame: UIScreen.main.bounds)
        view = rootView
    }
    
    private var viewModel: ScheduleDetailViewModel
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        setupData()
        bindViewModel()
        reactiveAction()
        requestFollowList()
        
        viewModel.loadPointData()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        rootView.vipTipsLab.text = AppContextManager.shared.vip > 1 ? "" : "升级 VIP，可查看具体人员与节点"
    }
    
    private func reactiveAction() {
        rootView.operateBtn.rx.tap.subscribe(onNext: { _ in
            guard let model = self.viewModel.scheduModel else { return }
            if model.is_own {
                AppRouter.push(Route.createSchedule, userInfo: ["scheduleJson": model.toJSON()])
            }
            else {
                self.requestSetFollow(id: model.id, op: self.rootView.operateBtn.isSelected)
            }
        }).disposed(by: disposeBag)

        rootView.routeBtn.rx.tap.subscribe(onNext: { _ in
            guard let model = self.viewModel.scheduModel else { return }
            AppRouter.push(Route.itineraryDetail, userInfo: ["scheduleJson": model.toJSON()])
        }).disposed(by: disposeBag)
        
        rootView.vipTipsLab.rx.tapGesture.subscribe(onNext: { _ in
            AppRouter.push(Route.vipRecharge)
        }).disposed(by: disposeBag)
    }
    
    private func bindViewModel() {
        viewModel.output.sectionedItems
            .bind(to: rootView.collectionView.rx.items(dataSource: dataSource))
            .disposed(by: disposeBag)
        
        viewModel.output.pointSectionedItems
            .bind(to: rootView.tableView.rx.items(dataSource: tableViewDataSource))
            .disposed(by: disposeBag)
    }
    
    private func setupData() {
        guard let model = viewModel.scheduModel else { return }
        rootView.dateLab.text = rootView.dateLab.getDateInterval2String(date: "\(model.timestamp / 1000)", dateFormat: "yyyy年MM月dd日")
        rootView.creatorIcon.image = model.userIcon
        
        var operateName = ""
        if model.is_own {
            operateName = "编辑行程"
        }
        else {
            operateName = "关注行程"
            rootView.operateBtn.isSelected = model.is_follow
        }
        rootView.operateBtn.setTitle(operateName, for: .normal)
    }
    
    // MARK: - API
    private func requestFollowList() {
        DLToast.showLoading()
        ItineraryService.queryFollowList(id: viewModel.routeId).subscribe(onNext: { response in
            DLToast.dismiss()
            self.viewModel.loadViewedData(response.list)
            self.rootView.noDataLab.isHidden = response.list.count > 0
        }, onError: { _ in }).disposed(by: disposeBag)
    }
    
    private func requestSetFollow(id: String, op: Bool) {
        DLToast.showLoading()
        ItineraryService.follow(id: id, op: op ? 2 : 1).subscribe(onNext: { response in
            DLToast.dismiss()
            DLToast.show(text: op ? "已取消" : "已关注此行程， \n行程路线将自动添加到您的行程列表。")
            self.rootView.operateBtn.isSelected = !op
        }, onError: { _ in }).disposed(by: disposeBag)
    }
    
    // MARK: - dataSource
    private lazy var dataSource: RxCollectionViewSectionedReloadDataSource<ViewedListSectionModel> = {
        RxCollectionViewSectionedReloadDataSource<ViewedListSectionModel> { datasource, collectionView, indexPath, model in
            let cell: ViewedCell = collectionView.dequeueReusableCell(for: indexPath)
            cell.configure(model)
            return cell
        }
    }()
    
    lazy private var tableViewDataSource: RxTableViewSectionedReloadDataSource<SchedulePointDetailSectionModel> = {
        return RxTableViewSectionedReloadDataSource<SchedulePointDetailSectionModel>(
            configureCell: { (dataSource, tableView, indexPath, item) in
                switch item {
                case let .point(model):
                    let cell: SchedulePointDetailCell = tableView.dequeueReusableCell(for: indexPath)
                    cell.configure(model: model, index: indexPath.section, total: dataSource.sectionModels.count)
                    return cell
                case let .event(model):
                    let cell: SchedulePointEventCell = tableView.dequeueReusableCell(for: indexPath)
                    cell.configure(model: model, index: indexPath.section, total: dataSource.sectionModels.count)
                    return cell
                }
            }
        )
    }()

    // MARK: - Init
    init(routeId: String, scheduleJson: [String: Any]) {
        self.viewModel =  ScheduleDetailViewModel(routeId: routeId,
                                                  model: scheduleJson.isEmpty ? nil : ScheduleModel.init(JSON: scheduleJson))
        super.init(nibName: nil, bundle: nil)
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
}